| 循环流化床密相区内颗粒的横向扩散的研究 |
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| 引用本文： | 杨海瑞,吕俊复,刘青,岳光溪.循环流化床密相区内颗粒的横向扩散的研究[J].中国化学工程学报,2002,10(4):490-493. |
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| 作者姓名： | 杨海瑞 吕俊复 刘青 岳光溪 |
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| 作者单位： | YANG Hairui LU Junfu LIU Qing YUE GuangxiDepartment of Thermal Engineering，Tsinghua University，Beijing 100084，China |
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| 摘 要： | Lateral solid mixing was investigated experimentally in the dense zone of a 900mm×100mm×5.2m rectangular circulating fluidized bed riser. Using heated tracer injection, the lateral solid dispersion was determined by measuring the temperature response at different lateral positions. Furthermore, a one-dimensional dispersion model, which describes the solid mixing in the dense zone, is presented. The experimental results were used to determine the lateral particle dispersion coefficient under various operating conditions. A correlation of dispersion coefficient with bed height, gas velocity, and particle size is also proposed.
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| 关 键 词： | 循环化床 稠密区 横向固体混合 |
| 修稿时间： | |
Lateral Solids Mixing in the Dense Zone of a Circulating Fluidized Bed |
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| YANG Hairui,LU Junfu,LIU Qing,YUE Guangxi.Lateral Solids Mixing in the Dense Zone of a Circulating Fluidized Bed[J].Chinese Journal of Chemical Engineering,2002,10(4):490-493. |
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| Authors: | YANG Hairui LU Junfu LIU Qing YUE Guangxi |
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| Affiliation: | Department of Thermal Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | Lateral solid mixing was investigated experimentally in the dense zone of a 900mmx100mmx5.2m rectangular circulating fluidized bed riser. Using heated tracer injection, the lateral solid dispersion was determined by measuring the temperature response at different lateral positions. Furthermore, a one-dimensional dispersion model, which describes the solid mixing in the dense zone, is presented. The experimental results were used to determine the lateral particle dispersion coefficient under various operating conditions. A correlation of dispersion coefficient with bed height, gas velocity, and particle size is also proposed. |
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| Keywords: | lateral dispersion coefficient heated tracer particle dense zone circulating fluidized bed dense zone |
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